Very sleek, but lacks the ability to add custom websites using their urls directly.

The best home screen, bar none. It packs a punch in both features and elegance. EDIT: Dec 24 2024, their website is regularly down, for hours and hours at a time. Twice in 2 days where their site was down for 6+ hours at a time. While the site is down, you can no longer customize the home page with custom logo/image because it can't call home to save your changes. Terrible user experience! Knocked it down to 3 stars.

It can't used when opening a new window.
Address bar displayed:
"moz-extension://85dc73d2-40ba-44b7-87fc-d0f90b3a5a4f/asset/html/newtab.html"